Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:38  ☀️ Transit: 13:03  🌅 Sunset: 19:28

Gudja - κ Serpentis (kappa Serpentis)

Gudja, also designated as κ Serpentis (kappa Serpentis), is a variable hypergiant star in the constellation of Serpens.

Gudja visual magnitude is 4.09. Because of its moderate brightness, Gudja should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about Gudja:

Gudja - κ Serpentis (kappa Serpentis) is above the horizon from Greenwich, United Kingdom [change]. Altitude: 29°.

Celestial coordinates and finder chart of Gudja

Gudja is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of Gudja are provided in the following table:

15h 48m 44s
+18° 08’ 30”

The simplified sky map below shows the position of Gudja in the sky:

Finder chart Gudja - κ Serpentis (kappa Serpentis) star
Simplified finder chart for Gudja - κ Serpentis (kappa Serpentis).

Visibility of Gudja from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Gudja - κ Serpentis (kappa Serpentis) rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 71.9°
Max altitude: 56.7°
Azimuth: 288.1°
Gudja - κ Serpentis (kappa Serpentis) is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of Gudja

The image below is a photograph of Gudja from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of Gudja is -0.051 arcsec per year in Right Ascension and -0.088 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of Gudja - κ Serpentis (kappa Serpentis) star
DSS2 image of Gudja. The red arrow shows the motion of Gudja during the next 10000 years (-8.50 arcmin in Right Ascension and -14.67 arcmin in declination);

Distance of Gudja from the Sun and relative movement

Gudja is distant 348.29 light years from the Sun and it is moving towards the Sun at the speed of 39 kilometers per second.

106.84 pc
348.29 ly
-39 km/s
-0.051 arcsec/year
-0.088 arcsec/year

Spectral properties of Gudja

Gudja belongs to spectral class M0 and has a luminosity class of III corresponding to a hypergiant star.


The red dot in the diagram below shows where Gudja is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of Gudja. Attribution: Richard Powell / CC BY-SA

Alternative designations of Gudja

κ Serpentis
(kappa Serpentis)
35 Serpentis